#577C76
Closest named color: Battleship Grey (#6B7C85). oklch(55.7% 0.043 183.6), rgb(87, 124, 118).
Aa
White text reads best on this color (4.61:1).
About this color
#577C76 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.043 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Grey (#6B7C85), ΔE 0.037 away. White text reads best on it, at 4.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Battleship Grey (#6B7C85) |
| Black text | 4.54:1 |
| White text | 4.61:1 |
Values
| HEX | #577C76 |
| RGB | rgb(87, 124, 118) |
| HSL | hsl(170, 18%, 41%) |
| OKLCH | oklch(55.7% 0.043 183.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #577C76 | 4.61:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #577C76 | 4.54:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #577C76 text on white | 4.61:1 | AA | Lc 72.0 | Content text, not long reading |
| #577C76 text on black | 4.54:1 | AA | Lc -29.7 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DBDA
oklch(88.4% 0.01 189)
-
Step 300
300
#B4C5C2
oklch(81% 0.019 184.1)
-
Step 400
400
#8CA7A2
oklch(70.6% 0.031 183)
-
Step 500
500
#6F928C
oklch(63.2% 0.04 183.4)
-
Step 600
600 (this color)
#577C76
oklch(55.7% 0.043 183.6)
-
Step 700
700
#476863
oklch(49% 0.039 184.3)
-
Step 800
800
#3A5551
oklch(42.7% 0.033 184.6)
-
Step 900
900
#324643
oklch(37.6% 0.026 184.7)
-
Step 950
950
#1E2927
oklch(27% 0.016 182.8)
#577C76 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #797876 | 0.046 |
| Deuteranopia (no green cones) | #727377 | 0.043 |
| Tritanopia (no blue cones) | #4C7E7A | 0.013 |
| Achromatopsia (no color) | #757575 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577C76
#577C76
oklch(55.7% 0.043 183.6)
- #8A6971
#8A6971
oklch(55.6% 0.044 2.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #577C76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Grey #6B7C85 ΔE 0.037
- Battleship Gray #6C757D ΔE 0.038
- Grey Blue #647D8E ΔE 0.042
- Steel Grey #6F828A ΔE 0.047
- Teal #008080 ΔE 0.053
- Metallic Blue #4F738E ΔE 0.054
- Slate Gray #708090 ΔE 0.054
- Medium Grey #7D7F7C ΔE 0.054
Use #577C76 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.